Variable-speed driving-gear mechanism.



W. EVENSEN. VARIABLE SPEED DRIVING GEAR MECHANISM.

Patented A r. 4, 1911 4 BEEETB-SHEBT 1.

' w. EVENSBN. VARIABLE SPEED DRIVING GBAKMEOHANISM. A'PPLIOATIOH TILED JULY 1, 1910- I 988,560, Patented Apr. 4, 1911.

4 SHEETS-SHEET 2.

W. EVENSEN. VARIABLE SPEED muvmu GEAR MEGHANISM.

APPLICATION FILED JULY 1, 1910. 988,560 Pat ented Apr.4, 1911.

W. BVENSBN.

VARIABLE SPEED DRIVING GEAR 11201111111911.

AHLIOATION FILED JULY 1, 1910.

988,566. Patented Apr. 4, 1911.

4 SHEETS-SHEET 4.

UNITED STATES PATENT/OFFICE; j

WILLIAM EVENSEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THl l GOSS PRINTING PRESS COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

VARIABLE-SPEED DRIVINGQGEAR MECHANISM.

Specification of lietteralatent.

Application filed July 1, 1910. Serial No. 569,929.

Patented Apr. 4, 1911 cage, in the county of Cook and State of Illinois, have invented certain .new and useful Improvements in Variable-Speed Driving-Gear Mechanism for Printing- Presses, of which the following is a specification, reference being had to the accompanying drawings. 7.

My invention relates to variable-speed driving mechanism for printing presses, and

'i'ent'position close to the its object is to provide a new and improved driving mechan sm for: printing presses whlch may be driven by a hlgh speed motor and which, with the motor running at continuous speed, may, be shifted so that the press may be'driven at slow speed or at high speed, and in which the shift from slow speed to high speed may be made without first disengaging the low speed, thus preventing the occurrence of an interval of. time, during such shifting from slow to high speed, in

which the press, not being positively driven,

would. slow down by its own momentum. I

accomplish this object as illustrated in the drawings and as hereinafter described.

What I regard as new is set forth in theclaims.

In the accompanying drawings,-Figure 1 is a top or plan view with part of the framework removed and cut away to expose the structure; Fig. 2 is a front elevation; Fig. 3 is a detail, being an end view of the driving mechanism seenfrom the right in Fig. 1; Fig. 4 is a detail, being a section on 5 line fr-"4: of Fig. '1; Fig. 5 is an enlarged detail, being a vertical cross-section on line 5-5 of Fig. 1; Fig. 6 is an enlarged detail, being a vertical section on line 66 of Fig. '1; and Fig. 7 is an enlarged detail,- being a vertical section on line 7-7 of Fig. 1.

'. Referring to the drawings,-- 8 indicates a part of the framework of a printing press,

the other parts of the press not being shown asthey may be of any well-known type.

9 indicates the framework of the driving mechanism, which is mounted in inconvenframework of .the printing press. 3

10 indicates a drive-shaft, which is journaled in suitable bearings, as -11., on the framework 9. o

12 indicates a gear, which is secured near the outer end of the drive-shaft 10 and is adapted to be driven by any suitable highspeed motor (not shown).

13 indicates a pinion, which is keyed,0r

otherwise secured, upon the drive-shaft 1t). 14 indicates a clutch-member, which is feathered onthe drive-shaft 10 so as to move to and fro longitudinally thereon and,

is operated by mechanism hereinafter described. v

15 indicates a hub, which is loosely mounted on the shaft. 1O.

16 indicates a geqr, which is preferably formed integral wlti the hub 15, but may be secured thereto, of course, in any suitable manner.

'17 indicates a clutch-member, which is formed integral with, or .in any suitable manner secured to, the outer face of the gear 16, and is adapted to coact with the clutchmember 14. i

39 indicates a driving-gear, which'is either formed integral with or in any suitable manner secured to the hub 15 so as to rotate therewith. 1 18 indicates a gear, which is keyed to a shaft 19 journaled in the framework 8 of the press and by means of which, through suitable gearing (not shown), the press may be driven. I

20 indicates a shaft, which is journaled in suitable bearings, as 21, mounted on-the,

framework 9. v

22 indicates a slow-s )ced gear, which meshes with pinion 13 an is loosely mounted on a bushing 23 loosely mounted on shaft 20, as is best shown in Fig. 6. v

' 24 indicates a ratchet-wheel, which is keyed, or otherwise suitably secured, to the hub of the gear 22, as is best shown in Fig. 6.

25 indicates a wheel or spider, which runs loose on bushing 23 and carries, pivoted upon its outer surface, pawls 26 which are adapted to engage with the ratchet-wheel 24.

27 indicates a clutch-member, which is keyed, or ,otherwise secured, to the hub of the spider wheel 25, as is best shown in Fig. 6. 28 indicates a second clutch-memher, which is feathered on shaft 20 so as to slide to and fro longitudinally thereon and rotate therewith. The clutch-member 28 is adapted to coact with clutch-member 27 in the usual manner and is operated to be engaged and disengaged therefrom by mechanism hereinafter described.

29 indicates a pinion, which is keyed, or

otherwise suitably secured, to shaft 20 and meshes with gear 16.

30 indicates a brake-pulley, which is keyed,

or otherwise suitably secured, to shaft 20.

:31 indicates a flexible brake-band provided upon its inner surface with a plurality of brake-shoes 32 engaging the surface of pulley 30. -One end of the flexible brakeband'3l is secured to a bracket 33 mounted upon the framework 9, and the other end is secured to a pin 34 which is screw-threaded at its lower end and passes through a suitable bearings, as 41, on the framework suitable opening in a bearing 35 on an arm 36 on rock-shaft 37. A nut 38 on the screw-' threaded end of pin 34,bearing against the the bearing 35 is adapted to tighten or loosen the brake-band so as to suitably adjust it. The rock-shaft 37 is operated by mechanism hereinafter described.

40 indicates a rock-shaft journaled in 1 ofthe press 8.

42 indicates operating levers, which are suitably secured, as by pins 43, to the rockshaft 40.

44 indicates a rock-arm, which is pinned,

or otherwise suitably secured, to rock-shaft its lower end so, as to embrace a hub 50' 'which is feathered upon shaft 10 so as to slide longitudinally thereon, and .is connected by usual toggle-joint levers 51 with clutch-member 14. These shifting levers and clutch-members are of any ordinary. form and construction and operate in the wellknown manner, whereby the rocking 'of shaft '47 in one direction or another through the link 45 by means of lever 42 will operate to engage or disengage the clutch-members, 52 indicates a rock-arm, which 1s secured to the rock-shaft 47.

53 indicates a link,'which is pivotally connected at one end with the end of the rockarm 52 and which is connected at the other end with a rock-arm 54 secured to rockshaft 37. These parts are so adjusted that when the operating levers 42 are moved in a contra-clockwise direction the"rock.-sha ft 47 is rocked in the opposite or' clockwise direction,-rocking the rock-shaft 37 in the same direction, thus moving downward the rock-arm 36 above described attached to said rock-shaft, thereby pulling down the rod 34, tightening the brake-band '31 and ti-ghten-ing thebrake-shoes 32. upon the brake 30 for the purpose of stoppingthe machine.

moved inward into the clutch-member 17,

esaseo The movement is so. timed that the braking effect is provided after the arm 42 is moved in a eontrmclo'ckwise direction beyond the positions indicated in the figures. W hen the levers 42 are rocked in a clockwise direction, therock-shaft40 is, of course, rocked in the same direction, and by means of rockarm 44, link 45, rock-arm 46 and clutchshifter 49 the movable clutch-member 14 is effecting a frictional engagement between them so as to cause the clutch-member 17, gear 16, hub 15 and driving gear 39 to rotate in the same direction as the gear 12, moving the press. o

54 indicates a lever, which is jOUIIlfl-lfld upon shaft 40 intermediate its ends with the arm 54 extending below the shaft 40.

55 indicates a link, which is pivotally co1i-' nected at one end with the lower end of the arm 54 of lever 54 and at the other end is pivotally connected with a rock-arm 56 keyed, or otherwise secured, upon a rockshaft -57 which is journaled in suitable brackets, as 58, on the framework 8. 9

59 indicates a rock-arm secured torockshaft57.

60 indicates a link, which is pivotally connected atone end'with. the rock-arm 59 and at the other end with the upper end of a clutch-shifter 61 whose lower end is pivoted to a suitable bracket, as 62, on the framework 9, and which'is adapted to engage a collar 63 slidingly mounted onzshaft 20, and by means of toggle-levers 64, connected with 1 clutch-member 28 to move the clutch-members into and out of engagement. The clutch-shifteris of the well-known kind and description and its connections ,with the clutch-member 28 are also of the well-known 1 kind and description and need no detailed description here. ,The clutch-shifter operates in the usual manner to move the clutchmember 28 into and'out of engagement with clutch-member 27. When the lever 54is rocked in a clockwise direction,.it, through 1 the medium of arm 54*, link 55 and rock-arm 56, rocks the rock-shaft- 57 in a clockwise direction; By means of the rock-arm 59,

,link 60, the clutch-shifter is moved to the 11 [left in Fig. 4, movin the clutch-member 38 into engagement wlth clutch-member 27; The opposite movement of operating lever 54, of course, moves the parts in the opposite direction and locks the clutch-members.

The operation of the press as follows: The shaft 10 being driven through gear 12 e in a constant clockwise direction by a suit able high-speed motor (not shown) and the variousclutch-members all being out of engagement and the brake freethat is to say, with the parts 'in' the position shown in the drawingsethe rotation of the shaft 10 is communicated bypinion 13 to slow-speed gear 32 which rotates ina contra-clockwise i I directions-that istdsay,

in the direction in-. d-icated by' the arrow in Fi 51. This. carrie's: aroundwithi it the; rate et-wheel 24 in the same direction, and this movement, by

ratchet-teeth, iscommunicated to the spider carries with it the clutch-member 27, all moving in a contrarclockwise direction. The shaft 20, of course, so far, remainsidle; Op-

cratinglever fi t-is then. moved. to the right that is. to say, in a clockwise directions-ands the clutch-member 28, which is feathered .on theshaft 20, is .movedinto. engagement with tion; of shaft 20, carrying-with it pinion 29- which-, engaging with gear 16, rotates it ina clockwise direction at slow speed, rotating 16, and may be varied, of

with it driving-gear 39 and driving the press at slow speed. The speed, of course, will depend upon the relative number of teeth in.

pinion 13, gear 22 and in pinion 29 and gear course, to suit the .demands of operation. .The press. being clock-wise direction-r in the same dlrection. This moves clutch-.

th-us' driven at slow speed, one of the levers 42 is swung to the righ(f-that is to say, 111 a 7 member 14 into enga ement with clutchmember 17, driving clutch-member 17, gear 16, and driving-gear 39 in a clockwise direc- 4 tion and at high speed. As the engagement between the clutch-members is a frictional one and moves gradually into tighter engagement, as the clutch-member 14 is slid farther intoclutch-member 17 in the usual manner, this speed will. be taken on gradually and; not suddenly, but will very shortly arrive at full speed so that thegear 39 is driven at the same speed as shaft 10. It will not be necessary to disconnect the slow-speed mechanism or throw it out of operative relatio'n-with the press before the high speed scription.

engagement is thrown into operation, as w1ll be readily understood fromv the foregoing de- Of course as soon as the gear 16, which, as has been said, has been driven: in a clockwise direction during the slow speed engagement, begins to take on higher speed by the engagement of the hlgh speed clutches, the gear 29 will, of course, be speedcd, but inthe same'direction in which 1t was previously running, and the slowspeed clutches 37 38, being still in engagementthe pawls 26, will slip over the ratchetteeth'of. ratchet-wheel 29 as the speed in-.

creases. The high speed movement being taken up, the hand-lever 54 may thereupon ,be rocked to the left-that is, in a contraclockwise direction-to the position shown in the drawin s, disengaging clutch-members 27 and 28. he press may, of course, be moved down to run at slow speed from high speed by reversing the above movements,-

that is, by moving the hand lever 42 to the means of the pawls. 26- whichengagethe the clutch-member 27-. This causes the rota-.1-

,tating rock-shaft 40" left in a 'oontra clockwisedirection to the gosition. shown. in the drawings, and thus isen ging the clutch-members -whlle the handever 54 maybe rocked backward so as to bring the slow-speed mechanism into en-.

gagement, as above described. It beingdesired to stop the press,/say from. high. speed, the operating levers/12am rocked to the left in acontrarclockwise direction, which, by the time they have reached the. position shown in the drawings, has" released. the clutch-members from. frictional engagementj with each other. Further movement in the samedirection. applies the brake, as has been above described, slowing down and ultimately stopping the press. If the press'is running at slow speed and it is desired to stop it, the clutch-members are disengaged by the proper movement of levers 54 and the same movement of the lever'42 farther to the left applies the brake.

That which I claim' as my invention and desire to secure by Letters Patent is,--

1. In combination, a main driving-shaft, a driving-gear rotatably mounted on said driving-gear with said driving-shaft and disconnecting it therefrom, a second shaft,

diminishin -speed gearing, gearing between 1 I said second means for putting said diminishing-speed gearing into and out of operative relation with the gearing connecting said second shaft with said driving-gear, said means including pawl and ratchet mechanism between said diminishing-speed gearing and said connecting and disconnecting means.

2. In combination, a main driving-shaft, a driving-gear rotatably mounted on said shaft 'a clutch-member secured thereon, a second clutch-member slidingly mounted on shaft and said driving-gear,

/ shaft, means for operatively connecting said said main driving-shaft, means for connecting and disconnecting said clutch-members, a pinion on said drivingshaft, a second shaft, a ear rotatably'mounted on said second sha t and meshing with said pinion, a gear fast with said driving-gear on said driving-shaft, a pinion secured to said secondshaft and meshing with said last-named gear, shiftable clutch mechanism on said second shaft, and pawl and ratchet mechanism between said gear on said second shaft and said clutch mechanism. i I

3. In combination, a main driving-shaft, a driving-gear rotatably mounted on said shaft and having a large gear rigidly connected with said driving-gear, clutch mechanism adapted to operatlvely connect said driving-gear with said shaft and disconnect it therefrom, a pinion on said main drivingshaft, a second shaft, a large gear rotatably mounted on said shaft, a clutch-member ro- 35 a'pinion on said shaft, a second shaft, a

4. In combination, a main driVingshaft,

a main driving-gear rotatably mounted on said shaft, a large gear rigidly connected with said drivingrgear, a clutch-member secured to said large gear and rotatable with it on saidshaft, a second clutch-member feathered on said Shaft and adapted to doact to "be moved into and with said first clutch-member, a pinion secured on said shaft, a second shaft, a large gear rotatable thereon and meshing with said pinion, a ratchet-wheel secured to said large gear, a spider carried by said shaft and rotatable with reference to said shaft and with said large said spider, a clutch-member rigidly con-'- neeted with. said spider, a second clutchmember feathered on said second shaft and adapted-to coact with said first clutch-member, and a pinion secured to said second shaft and adapted to-mesh with the large pinion rigidly connected with'said driving-gear.

5. In combination, a main driving-shaft, a driving-gear rotatablyimounted thereon, a large gear secured to the. hub of said driving-gear, clutch mechanism adapted to operati-vely connect said driving-shaft with said driving-gear and to disconnect it therefrom,

bushing rotatably mounted on said second shaft, a large gear rotatably mounted on said bushing and meshing with said pinion on said first shaft, a ratchet-wheel securedto the hub of said large gear, a support rotatably -mounted on said bushing, a pawl carried y said support and adapted toengage sai ratchet-wheel when rotated in one direction, a clutch-member rigidly connected with said support, a second clutch-member featheredon said second shaft and adapted with said first clutch-member, and a small gear on said second shaft meshing with the large gear on the hub of said driving-gear.

6. In combination, a main driving-shaft, a

d-riving-gear rotatably mounted thereon,

large-gear secured to the hub of said drivinggear, clutch mechanism adapted to operatively connect said driving-shaft with said v driving-gear and to disconnect it therefrom,

El P1 111011 on said shaft, a second shaft, a

bushing rotatably mounted on said second shaft, a large gear rotatably mounted on said bushing and meshing with said pinion on said first shaft, a ratchetwheel secured to the hub of said large gear, a' spider rotatably mounted. on said bushing, pawls-carried by said spider and adapted to engage said ratchet-wheel when rotated in one direction,

gear, pawls carried by whereby said driving-gear maybe brought with said main driv out of engagement seated at clutch member.secured' on said spider,a second clutch-member feathered on said'sec ond shaft and adapted to be moved'into and out of engagement with said first clutchm'ember, a small gear on said second shaft meshing with the large gear on the hub of said driving-gear, andbrake mechanism on said second shaft.

7. In combination, a main driving-shaft, a driving-gear rotatably mounted on said shaft, mechanism for operatively connecting said driving-gear with said driving-shaft and disconnecting it therefrom, a second shaft, diminishing-speed gearing between said second shaft and said first shaft, said diminishing-speed gearing including pawl and ratchet mechanism adapted to operatein one direction of rotation but not in the other, and shifting means adapted to move said diminishing-speed gearing into and out of operative relation with said first shaft intooperative relation ing-shafti'n passing from slow to high speed without first throwing the diminishing-speed gearing outof operative relation. 7

8. In combmatlon, a mam dr1v1ng shaft,adrlvl'ng-gear rotatably mounted thereon, clutch mechanism adapted to put said main driving-shaft into operative relation with said driving-gear,

a second shaft, slow-speed drivingmechamsm carried on said second shaft and driven from said ,main shaft, clutch mechanism on said second shaft adapted to put said s1ow-s eed driving mechanism into operative-re ation therewith, a rock-shaft,*means for. rocking said shaft, connections between said rock-shaft ingvshaft whereby by the rocking of said shaft the clutch mechanism -may be thrown into ahd out of engagement, a lever rotatably mounted on said rock-shaft, and connections between said lever and the clutch mechanism on said slow-speed shaft adapted by the movement of said lever to throw said and the clutch mechanism on said main drivclutch mechanism into and out of engagement; I v

9. In combination, a main driving-shaft,'a driving-gear rotatably mounted thereon, clutch mechanism adapted to put said main driving-shaft into operative relation with said driving gear, a second shaft, slowspeed driving mechanism carried on said second shaft and driven from said main shaft, clutch mechanism on said second shaft adapted to put said slow-speed driving mechanism into operative relation therewith, brake mechanism, a rock-shaft, means for rocking'said shaft, a second rock-shaft, connections between said two rock-shafts, connections between said second rock-shaft and the clutch mechanism on said main drivingshaft, connections between said second rock- Shaft and said brake mechanism whereby when said rock-shaft is rocked in one direction the brake may be thrown into engagement and when said rock-shaft is rocked in the other direction said clutch mechanism may be' moved out of engagement and upon movement of the ]ever the brake mechanisn'i operated, a lever journaled on said first rockshaft, a third rock-shaft, and connections be tween said lever and said third rock-shaft and between said third rock-shaft and the clutch mechanism on said slow-speed shaft adapted to throw said slow-speedmochanism into and out of engagement.

WILLIAM EVENSEN.

Witnesses:

C. E. PlCKARl), W. H. DE BUSK. 

